重稀土钇对铬系合金白口铁组织及性能的影响  

Effects of Heavy RE Yttrium on Structure and Properties of Cr-Series Alloyed White Cast Irons

作　　者：朱福生 杨宇鹏 许瑞高 廖志军 

机构地区：[1]赣州龙钇稀土材料有限公司,江西赣州341001 [2]龙南龙钇重稀土材料有限公司,江西龙南341700

出　　处：《现代铸铁》2006年第5期33-36,共4页Modern Cast Iron

基　　金：2005年国家科技型中小企业技术创新基金;立项代码:05C26213600929

摘　　要：研制了一种钇基重稀土变质剂。通过与镧、铈等轻稀土变质剂对比试验研究发现:重稀土钇变质剂能明显改善低、高铬合金铸铁的基体组织及碳化物的形态,使硬度、冲击韧性有较大的提高,因而能有效降低Mo、Ni、Cu等合金元素的添加量。A new type of Y-base heavy rare earth modifieator was developed. By comparative tests with the new modificator and modificators containing light rare earth elements such as La and Ce, it was found that the Y- containing modifieator could obviously improve structure and carbide morphology of both the low and high chromium white cast irons, substantially increase their hardness and impact toughness and so that the addition amount of Mo, Ni and Cu could be reduced effectively.

关 键 词：重稀土钇 变质剂 铬系合金白口铁 

分 类 号：TG253[金属学及工艺—铸造]